Here is a list of all struct and union fields with links to the structures/unions they belong to:

- f -

• factor : PowerCallibSize
• falling_edge : s_sdc_clock
• fan_in : s_rr_node
• fanout : s_clock
• fc : s_fmap_cell
• Fc : s_type_descriptor
• fc_constraints : s_timing_constraints
• fcn : t_button
• feasible_blocks : s_pb_stats
• ff_constraints : s_timing_constraints
• FF_size : s_power_arch
• file_line_number : s_io , s_override_constraint
• FileNameOpts : s_vpr_setup
• first_iter_pres_fac : s_options , s_router_opts
• fixed_channel_width : s_router_opts
• flags : ezxml
• format : s_pin_to_pin_annotation
• fptr : s_linked_f_pointer
• frac_cb : s_segment_inf
• frac_sb : s_segment_inf
• frequency : s_segment_inf
• from_block : s_pack_pattern_connections
• from_clb_pin_end_index : s_clb_to_clb_directs
• from_clb_pin_start_index : s_clb_to_clb_directs
• from_clb_type : s_clb_to_clb_directs
• from_pin : s_direct_inf , s_pack_pattern_connections
• Fs : s_arch , s_det_routing_arch
• fs : s_fmap_cell
• full_stats : s_router_opts